Eugene Dietzgen Co. Triangle Wooden Vintage Drafting Ruler.

VINTAGE DIETZGEN SIGNED WOODEN TRIANGLE RULER DRAFTING ENGINEERING US STANDARD

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Eugene Dietzgen Scale Plastic Triangle Ruler 1656-PG Architects Engine Divided

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Eugene Dietzgen Triangle Ruler Vintage White & Wood Colored Plastic UTZ on Item

Vintage Eugene Dietzgen Architects Plastic & Wood Triangle Ruler 1668-B Japan

Eugene Dietzgen Co. 1580S Architecture Scale Ruler US Std ~ Full, Half Size VTG!